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How do you effectively backup your high capacity (20+ TB) local NAS? (lemmy.world)
submitted 8 months ago by to c/selfhosted@lemmy.world
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I have a 56 TB local Unraid NAS that is parity protected against single drive failure, and while I think a single drive failing and being parity recovered covers data loss 95% of the time, I'm always concerned about two drives failing or a site-/system-wide disaster that takes out the whole NAS.

For other larger local hosters who are smarter and more prepared, what do you do? Do you sync it off site? How do you deal with cost and bandwidth needs if so? What other backup strategies do you use?

(Sorry if this standard scenario has been discussed - searching didn't turn up anything.)

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[–] 31 points 8 months ago (2 children)

Not all data is equal. I backup things i absolutely can not lose and yolo everything else. My love for this hobby does not extend to buying racks of hard drives.

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  • [–] 3 points 8 months ago*

    Same, my unraid server is over 40 tb but I only have ~1.5 tb of critical data, being my immich photos and some files. I have an on site and off site raspberry pi with 4tb nvme SSD for nightly backups

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